Production of aromatic carboxylic acids

Details Production of aromatic carboxylic acids Production of aromatic carboxylic acids

2007-07-03

2007-07-03

Oh, Taylor Victor (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S414000, C562S416000, C562S409000

Reexamination Certificate

active

10833442

ABSTRACT:
A process for the production of an aromatic carboxylic acid comprising contacting in the presence of a catalyst, within a continuous flow reactor, one or more precursors of the aromatic carboxylic acid with an oxidant, such contact being effected with said precursor(s) and the oxidant in an aqueous solvent comprising water under supercritical conditions or near supercritical conditions close to the supercritical point such that said one or more precursors, oxidant and aqueous solvent constitute a substantially single homogeneous phase in the reaction zone, wherein the contact of at least part of said precursor with said oxidant is contemporaneous with contact of said catalyst with at least part of said oxidant.

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Holliday et al , Organic synthesis in subcritical water oxidation of alkyl aromatics, 1998,12, p. 255-260.
Ding et al., “Supercritical Water Oxidation of NH3 over Mn02/Ce02 catalyst,” Ind. Eng. Chem. Res. 1998, vol. 37, p. 1706-1716.
R. L. Holliday, et al., “Organic Synthesis in subcritical water—Oxidation of alkyl aromatics,” The Journal of Supercritical Fluids, 12 (1998) pp. 255-260.
CAPLUS Abstract, AN 1998:240131, Ding et al. 1998.

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